<template>
  <div>
    <!--面包屑区域-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <!--卡片视图区域-->
    <el-card>
      <!-- 为ECharts准备一个具备大小（宽高）的Dom -->
      <div id="main" style="width: 600px;height:400px;"></div>
    </el-card>
  </div>
</template>

<script>
    // <!-- 引入 echarts.js -->
    import * as echarts from  "echarts"
    import _ from 'lodash'
  export default {
      data() {
          return {
              options: {
                  title: {
                      text: '用户来源'
                  },
                  tooltip: {
                      trigger: 'axis',
                      axisPointer: {
                          type: 'cross',
                          label: {
                              backgroundColor: '#E9EEF3'
                          }
                      }
                  },
                  grid: {
                      left: '3%',
                      right: '4%',
                      bottom: '3%',
                      containLabel: true
                  },
                  xAxis: [
                      {
                          boundaryGap: false
                      }
                  ],
                  yAxis: [
                      {
                          type: 'value'
                      }
                  ]
              }
          }
      },
      async mounted() {
          // 基于准备好的dom，初始化echarts实例
          let myChart = echarts.init(document.getElementById('main'))
          // 指定图表的配置项和数据
          const {data: res} = await this.$http.get('reports/type/1')
          if (res.meta.status !== 200) {
              return this.$message.error('获取报表失败！')
          }

          let result = _.merge(this.options, res.data);
          // 使用刚指定的配置项和数据显示图表。
          myChart.setOption(result)
      }
  }
</script>

<style scoped>

</style>
